San Giorgio a Cremano is a primarily residential town and comune in the Metropolitan City of Naples, in Italy. It is located on the foothills of Mount Vesuvius to the west of the volcano, and is six kilometres to the south east of the centre of Naples. Most parts of the municipality command views of Mount Vesuvius, Mount Somma and the Bay of Naples.

San Giorgio a Cremano was first settled in the 10th and 11th centuries, and has since been fairly regularly affected by the eruptions of Mount Vesuvius. Along with Portici, Ercolano, Torre del Greco, and Torre Annunziata, San Giorgio a Cremano is one of the five traditional towns that were to be found heading south from Naples on the coastal road along the Bay of Naples. In the 18th century the comune had become an extremely popular tourist resort, and attracted wealthier residents and the aristocracy from the Kingdom of the Two Sicilies, before going into decline following Italian unification, although primary industries and agriculture have persisted within the comune from its foundation to the modern day.

By the 19th century San Giorgio a Cremano had been absorbed by the expanding urban conglomeration of Naples, and it is now one of the most densely populated areas in the whole of the European Union. San Giorgio a Cremano is served by the Circumvesuviana metropolitan railway which connects it with central Naples, and is easily accessible by a number of major roads.

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